Sano 250R - Channel 1 preset

Verified · 90/100 confidence. Complete schematic. All component values readable. Parameters derived directly from the circuit.

The Sano Model 250 is a two-channel tube combo. Channel 1 has normal and stereo inputs, channel 2 its own input, and each has a 12AX7 triode with its own bass, treble and volume. A 12AX7 triode mixes them before a 12AU7 gain stage and cathodyne inverter driving cathode-biased 7591s into 4 ohm 12-inch speakers. A 6CS7 drives a Gibbs 4C reverb with 12AX7 recovery, a 12AX7 tremolo has a FET-switched footswitch, and a diode rectifier has a standby.

• Made in: USA
• Channels: 2
• Preamp tubes: 3× 12AX7, 1× 12AU7, 1× 6CS7
• Power tubes: 2× 7591

Tags: american, vintage, reverb, two-channel.

Schematic-derived preset files for 16 Fractal and Line 6 modelers: Axe-Fx II/XL/XL+, Axe-Fx III, FM3, FM9, and the full Helix family (Floor, LT, Rack, HX Stomp, HX Stomp XL, Native).

Gridleak extracts amp parameters from original circuit schematics using AI vision — component values, gain staging, tone stack topology, tube types — then generates native preset files for every supported modeler. Every extraction is scored 0–100 and the score is published.